Jesse Bering reminds us that “for the longest time … to be a pervert wasn’t to be a sexual deviant; it was to be an atheist.” Not until the late 1800s did the sexual connotation of “pervert” take hold:
The provenance of the term in [scholar Havelock] Ellis’s work is still a little hard to follow, because he initially uses ‘perverts’ and ‘perversions’ in the sense of sexual deviancy in a book confusingly titled Sexual Inversion (1897). Co-authored with the gay literary critic John Addington Symonds and published after Symonds’s death, the book was a landmark treatise on the psychological basis of homosexuality. In the authors’ view, ‘sexual inversion’ reflected homosexuality as an inside-out form of the standard erotic pattern. That part is easy enough to understand. Where the language of Ellis and Symonds gets tricky, however, is in their broader use of ‘sexual perversions’ to refer to socially prohibited sexual behaviours, of which ‘sexual inversion’ (or homosexuality) was just one. Other classic types of perversions included polygamy, bestiality, and prostitution. The authors adopted this religious language not because they personally believed homosexuality to be abnormal and therefore wrong (quite the opposite, since their naturalistic approach was among the first to identify such behaviours in other animals) but only to note that it was salient among the categories of sexuality frequently depicted as ‘against what is right’ or sinful. Theirs was merely an observation about how gays and lesbians (‘inverts’) were seen by most of society.
The Dish 